Disaggregating transport.  
The Go-Back-N transport consumes a fair amount of on-chip resources (roughly the same amount as Clio's core key-value functionality [1]}).
We move the Go-Back-N stack from multiple Clio devices to an sNIC and consolidate them by handling the aggregated load.
After moving the Go-Back-N stack, we extend each Clio device's link layer to a reliable one (§).
